chore: fix build warning
diff --git a/src/ninja.cc b/src/ninja.cc
index 2b71eb1..834e284 100644
--- a/src/ninja.cc
+++ b/src/ninja.cc
@@ -1400,7 +1400,7 @@
   BuildConfig* config;
 
   DeferGuessParallelism(BuildConfig* config)
-      : config(config), needGuess(true) {}
+      : needGuess(true), config(config) {}
 
   void Refresh() {
     if (needGuess) {